Sugar 62 Loaf Panorama 187 Bella L Point 72 Elkhorn Williams Devil’s Eye Brow BB EE AAVista VV EE RR Natural Area LL AA KK EE Pea Ridge National Henry Trimble Round Military Indian Lake Pea Park Creek 187 Leatherwood WATERSHEDS Glasscock Gentry WATERSHEDS BENTON Ridge CARROL Watersheds are separated BEAVER LAKE WATERSHED Garfield Dam Site River Park by topographic divides off Source water from 7 sub-watersheds Rich Dam Site North Park which water flows to one side flows into Beaver Lake/White River. or the other. Beaver Lake- Indian Creek Park USACE/Beaver Dam 187 White River WS 62 Humphery Dam Site Lake Park Lake Sequoyah-WR WS Pond Beaver Dam Middle Fork-WR WS 94 Carroll-Boone Water District War Eagle Lost Bridge Public Rolloff West Fork-WR WS Creek WS Avoca Lost Miles Richland Creek Use Area Creek WS “Two Ton” Benton/Washington Bridge Hollow Sugar Headwaters of Posy Regional Public Ford WR WS Water Authority Village Starkey Public Use Area 62 Coose Little Flock Hollow Like stacking bowls, a watershed W may be part of one that is larger and W Grindstone also have any number of smaller Prairie Creek Ventris “SUB-WATERSHEDS” inside it. Beaver Lake Park Pond The WHITE RIVER flows 722 miles from Project Office North its HEADWATERS near Boston, Arkansas in Larue the Beaver Lake Watershed, Clifty northward into Missouri, then Prairie 23 Creek south to the lowest point in Lake Creek 3D21 Buck its watershed where it joins Atalanta Rocky Branch the Arkansas RIver, ultimately Former 12 Park draining into the MISSISSIPPI Water Supply RIVER. Madison County Regional Hollow Water District WHITE RIVER WATERSHED 94 Big Area = 5,184 mi2 = 13426.5 km2 112 Creek Blackburn Creek Van MISSISSIPPI RIVER WATERSHED Watchable Wildlife Area Hobbs State Park Polecat Clifty Rambo 2 2 Area = 1,245,000 mi = 3,224,535.2 km Gulf of Mexico Conservation Area Bluff Field Drains 41% of the continental US War Eagle McIlroy Cavern Branch Creek Swain Madison A Horse Shoe Bend Visitor Center CreekSandstone A Monte Ne County Public Use Area Kenars Samuel WMA Lowell Creek NWNW ARKANSASARKANSAS War Eagle Mill 264 WATERSHEDWATERSHED NEIGHBORSNEIGHBORS Bear Hollow War Osage Natural Area L Hickory Creek Best 12 N Clifty McIlroy L Park O Sugar Creek Creek Madison County O Honey Creek S Missouri Phillips I Arkansas Clifty Wildlife R Hollow Bethel D 264 Management R A BENTON 49 Heights Creek Area A Eucha-Spavinaw 303 C Hickory M Nelson (WMA) Upper White River War Eagle WASHINGTON Fitzgerald Public Use Area Eagle Friendship Creek TT Illinois River Lake Kings Elmdale Clear Creek Been Webber Arkansas Nob Hill Creek Oklahoma 412 45 Forum Blue Springs Mulberry/Frog Bayou Price Use Area Withrow River Lee Creek Hindsville Springs 71B Sonora Lake State Park Harp Brush 303 Visitor Center Alabam Johnson Hindsville Lake Vaughan Creek Fayetteville Tater Hill Old Alabam Clear 8-Digit Hydrologic Unit Code (HUC) Watershed Map Former Water Supply Creek E 412 Glade E Keefer 265 Diera BEAVER LAKE 45 BEAVER LAKE Bohannan Gilliam Benson Creek WATERSHED FACTS Creek Carlock Dry Big Sandy Cave 16 Washington Creek Boyd AREA: DRAINAGE Holman War 2 2 Elementary Trammel 1186 mi = 3072 km = 759,040 Acres Pattern: Archibald Pierce Sinking Round Richland Creek Dendritic or Tree- Millsaps Old Mt. Sequoyah like with Small UA ELEVATION ABOVE MEAN SEA LEVEL: Razorback Main Lake Maximum: 2497 Feet = 761 Meters Branch Streams Kessler Mountain 295 Flowing to a Main Reserve Stadium Sequoyah Minimum: 925 Feet = 282 Meters Trunk Stream & Outdoor Classroom Former Creek Water Supply Creek TEMPERATURE: 2015 was the 24th warmest Washington Cherry Jones STREAM Old Pumphouse year on record since 1895 with an average 62 Hock FLOW temperature of 57.9°F = 14.4° C. Former Water R Branch Supply Creek R Maximum: Wesley 74 Wharton Puddin Hill Eagle March-May Precipitation: 74 Turtle South Draketown Creek Creek Minimum: Annual Average = 46.6 Inches TownMcCullom July - October Runoff To Streams & Lakes: 14 - 20 Inches 170 Kessler Robinson Pigeon Draketown Creek Hotel Drake Shofner Raid Field Lake Wilson Mill Middle Branch WATERSHED Round Former Water Supply Thorney Other 1% Water 4% PRIORITY ISSUES: Miller Top 303 Reynolds Urban 6% Georgetown Aurora • Since Beaver Dam was built in the 1960s, the population Henderson of NW Arkansas has grown Branch Drakes Chicken from less than 100,000 to over Faulkner 500,000 and is projected to Bristle Roundtop surpass 800,000 by 2040. JacksonKnob Pasture 29% White Oak Creek • Rapid population growth, Lollars Creek Bushart expanding development, and Rock Sulphur City Creek increasing demand for water Washburn Creek Snyder Burchette affect and continue to impact Stevenson Fork Forest 60% source streams and Beaver Lake. Round McCullah S White Spring S • Lake water quality is still Durham Hill Jackson good, but under stress due to Eubanks Japton rising levels of sediment and algae-feeding nutrients. Creek Terra • 45% of the watershed is Riverside Park Studios Grose Kecks BEAVER LAKE WATERSHED ranked moderate to severe in Lingebaugh Creek Witter erosion hazard potential. Bloyd NATIONAL LAND COVER DATA Snake Creek Creek Moore Little Creek 2011 • 78% of the watershed is very 156 Ole Opry limited for conventional septic West White system suitability. Mill Creek Ledbetter Parker Hill 23 Allen Knob Shumate 16 Hughes Creek Fork Sugar Hobbs River Creek Everett Fork Creek Thomas White Panther Knob Dry Creek River Hammond Crosses Hall Ogden LL EE GG EE NN DD 170 River Cannon Pig Trail Bypass H London Cafe & Grocery H Watershed County Whittmore Keck Knob Boundary Line Streams Waterbody Bluegrass at Brown Vandeventer Creek Mountain Creek Brentwood Community Delaney WATER QUALITY (WQ) Center Barker Knob Rain Garden Hutchins 295 White River MONITORING SITES Creek Anderson Patrick Pool Knob Headwaters Park Arkansas 49 Knob Department of Environmental Point of Environmental Protection Lee Denny Quality Interstate Baker War Eagle Creek Interest Agency Creek Knob Mahaffey Sugar Tree Arkansas Headwaters Boston Town Department of 71 Brannon Knob Pollution Control Secchi Day Combs Regional & Ecology Pettigrew Water 412 74 High Davey Dutton Providers StreamSmart USGS Creek Baldwin Crosses Streamflow U.S. Creek Brashears Garrett & WQ MGD Million Beaver Water Highway Mountain Gallons/Day District Parker Chimney Rock Devil’s Weedy Rough MSL Mean Sea Den Boone Possum Allard Creek Level State Phelps Isaac 45 Delaney USACE Knob E United States Park Creek E Army Corps State Creek of Engineers Highway Henderson WR White River Highest Point In Beaver Public Urban Fleming WS Watershed Ozark National Water Land Area WASHINGTON MADISON Burrell District Forest Mill West Hare Whiting 23 Fly Gap 6 CRAWFORD N Wakefield Government 49 Knob More Information Available at: Potato Knob beaverwatershedalliance.org • bwdh2o.org • owwbeaverlake.org Hoyle FRANKLI Beaver Lake Watershed Map Revised March 2020 Ozark National Forest JOHNSON DD THETHE U.S.U.S. ARMYARMY CORPCORPSS OOFF EENGINEERNGINEERSS CONCONSTSTRRUCTUCTEDED BEBEAAVERVER DADAMM OONN THETHE WHIWHITTEE RRIVERIVER TOTO CRECREatatEE BEBEAAVERVER LLAAKEKE BEAVER LAKE FACTS Beaver LAKE IS A Multipurpose Water STORAGE Reservoir Reservoir CHARACTERISTICS • TOP OF Conservation POOL: 1120.43 MSL • AVERAGE DEPTH: 60 ft = 18.3 m Upper end is river-like. Mid-section is a transition zone. Lower end lake-like. • DEPTH at DAM: 228 ft = 69 m • MAXIMUM DEPTH: 240 ft = 73 m RIVERINE TRANSITION LACUSTRINE • LENGTH HWY 45 TO DAM: 49.7 mi = 80 km wer, St ider, Flow Velocit e, Less T Narro ron W y Slows, Particles Settl urbid spe g C Turbulence • SHORELINE: 449 mi = 722.6 km ing, Su nded urrent, Winds Mix P High Turbid Light Penetrates, Polluta • Widest, Deepest Section Mix articles, ity nts/Nut ccumulate, Algae • Surface AREA: rients A Grows • Minimal to Negligible Current Temperature Incre 2 2 ases, Water Quality Diminished • Summer Stratification 44 mi = 114 km = 28,220 Acres B • Low Sedimentation & Nutrient • LAKE CAPACITY: 635.9 Trillion Gallons otto Decay Depletes Oxygen m Ha Concentrations bita • TOTAL MAXIMUM AUTHORIZED WATER t • Lowest Turbidity/Highest Clarity Bu ri • Fish Passage Blocked Seasonal SUPPLY WITHDRAWAL PER DAY: 147.5 MGD e d Un Mixing der Deposits of S (BWD=135 MGD, BWRPWA=4 MGD, edi me nt CBWD=6 MGD, MCRWD=2.5 MGD) & De Algae & P caying lant D ebris Source: USACE/Little Rock District/Beaver Lake Project Office Outflow to river below dam Stratification - Formation of layers TURBIDITY - Water clarity or cloudiness related to particles suspended in the water. 2015 DATA SUMMER Stratification & FALL”TURNOVER” WATER FLOW IN: 657 billion gallons WINTER UNIFORM SUMMER STRATIFICATION FALL TURNOVER WATER REMOVED “Used/Lost” (Gallons): Air Temperature Drops. Winds Cool & Stir Surface Layer • Power Generation: 350 billion BEAVER LAKE EPILIMNION Cooler, More Dense Water Sinks Warm/Low Density • Water Supply: 24.5 billion TEMPERATURE RANGES Relatively Uniform THERMOCLINE • Released Over Spillway: 122 billion SURFACE BOTTOM Density & Cold Temperature Rapid Warm To Cold Winter 32°-45°F 37°-40°F Transition with Depth • Evaporation: 31 billion Summer 78°-90°F 39°-45°F HYPOLIMNION • Unknown Means of Loss: 8.3 billion Cold/High Density B Wa ed TOTAL: 535.3 billion y ter Displac er Sin at king Surface W HYDRAULIC RETENTION TIME: Lakes and reservoirs that stratify and mix once a year are “Monomictic.” Beaver Lake stratifies or separates into layers of contrasting It takes about 1.0 to 1.5 years for water water temperatures and densities in Summer. Mixing occurs during the“Fall Turnover”as decreasing air temperature and winds cool to move through Beaver Reservoir. INFORMATION SOURCES: BEAVER WATER DISTRICT (www.bwdh2o.org) • US ARMY CORPS OF ENGINEERS/BEAVER LAKE (www.swl.usace.army.mil/Missions/Recreation/Lakes/Beaver-Lake/) water in the epilimnion, causing it to become more dense and sink to the bottom where it displaces water in the hypolimnion.